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Chapters
2: Locating Places on Earth
3: Movements of the Earth
4: Structure of the Earth
5: Rocks
6: Landforms of the Earth
7: Earthquakes
8: Volcanoes
9: Weathering and Denudation
10: Hydrosphere
11: Composition and Structure of Atmosphere
12: Insolation
13: Atmospheric Pressure and Winds
▶ 14: Humidity
15: Pollution-Types and Sources
16: Effects of Pollution
17: Pollution—Preventive Measures
18: Natural Regions of the World
*: Map Based Questions
![Rachna Sapra solutions for जॉग्रफी [इंग्रजी] इयत्ता ९ आईसीएसई chapter 14 - Humidity - Shaalaa.com](/images/geography-english-class-9-icse_6:e1464ff004d844649e81e9e1e11e08a5.jpg "Rachna Sapra solutions for जॉग्रफी [इंग्रजी] इयत्ता ९ आईसीएसई chapter 14 - Humidity")
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Solutions for Chapter 14: Humidity
Below listed, you can find solutions for Chapter 14 of CISCE Rachna Sapra for जॉग्रफी [इंग्रजी] इयत्ता ९ आईसीएसई.
Rachna Sapra solutions for जॉग्रफी [इंग्रजी] इयत्ता ९ आईसीएसई 14 Humidity SOLVE AND SCORE [Pages 154 - 156]
Multiple Choice Questions (MCQs):
Relative humidity is expressed as ______.
Fraction
Percentage
Absolute number
g/cm3
The liquids expand with ______ in temperature.
rise
fall
no change
may rise or fall
The diameter of drops in the case of drizzle is about ______.
5 mm
0.5 mm
5 cm
0.5 cm
______ are lines joining places receiving the same amount of annual rainfall.
Isobars
Isohytes
Isotherms
Isohalines
______ is the most common form of condensation.
Clouds
Rainfall
Water vapours
Fog
Statement (1): Condensation takes place when the dew point is lower than the freezing point.
Statement (II): Condensation takes place when the dew point is higher than the freezing point.
I and II both are true.
I and II both are false.
I is true, and II is false.
I is false, and II is true.
Statement (I): Hailstones are hexagonal in shape.
Statement (II): Snow flakes have concentric layers.
I and II both are true.
I and II both are false.
I is true, and II is false.
I is false, and II is true.
Which of the following is the region of high rainfall?
Equatorial region
Interior of continents
Rain shadow areas
High latitudes
Match the following:
| Column A | Column B | ||
| (A) | Cirrus | (i) | Layered clouds |
| (B) | Cumulus | (ii) | Low Grey heavy clouds |
| (C) | Stratus | (iii) | High Feathery clouds |
| (D) | Nimbus | (iv) | Cotton ball shaped clouds |
A (ii), B (i), C (iv), D (iii)
A (iii), B (iv), C (i), D (ii)
A (ii), B (iii), C (i), D (iv)
A (iii), B (i), C (ii), D (iv)
Match the following:
| Column A | Column B | ||
| (A) | Rainfall | (i) | Most common form of precipitation |
| (B) | Snowfall | (ii) | Frozen mass of ice crystals |
| (C) | Frost | (iii) | Concentric layers of ice |
| (D) | Hailstones | (iv) | Frozen drops of dew |
A (i), B (ii), C (iv), D (iii)
A (ii), B (i), C (iii), D (iv)
A (iv), В (ii), C (iii), D (i)
A (i), B (iv), C (ii), D (iii)
Which of the following is not a pre-condition for condensation to take place?
Saturated air
Dew point reached
Presence of dust particles
Wind movement
The following information pertains to which type of rainfall?
- Common in the equatorial region.
- Intense heating of the surface.
Convectional
Cyclonic
Orographic
None of these
Which form of condensation takes place when cool, moist air comes in contact with a hard, solid surface?
Clouds
Fog
Dew
Sleet
The white feathery clouds are called ______.
Cirrus
Cumulus
Nimbus
Stratus
Which of the following statement is incorrect?
Humidity increases towards the coastal area
Humidity decreases from equator to poles
Humidity increases with increasing latitude
Humidity decreases with increasing altitude
Assertion-Reason Based Questions:
Assertion (A): The temperature at which saturation occurs in a given sample of air is called the dew point.
Reason (R): The ability of the air to hold moisture depends upon its temperature.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, but R is not the correct reason for A.
A is true, and R is false.
A is false, and R is true.
Assertion (A): Convectional rainfall is common in the Equatorial region.
Reason (R): Convectional rainfall does not last long.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, but R is not the correct reason for A.
A is true, and R is false.
A is false, and R is true.
Assertion (A): Greater the movement of air, greater is the evaporation.
Reason (R): Movement of air replaces the saturated air with the unsaturated air.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, but R is not the correct reason for A.
A is true, and R is false.
A is false, and R is true.
Assertion (A): Absolute humidity is the actual amount of water vapour present in a given volume of air.
Reason (R): Absolute humidity decreases from the equator towards the poles.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, but R is not the correct reason for A.
A is true, and R is false.
A is false, and R is true.
Assertion (A): Pune gets much lesser rainfall than Mumbai though they are closely located to each other.
Reason (R): Leeward side of the mountain gets less rainfall than the windward side of the mountain.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, but R is not the correct reason for A.
A is true, and R is false.
A is false, and R is true.
Source-based Questions:
Rainfall is the most common form of precipitation. The raindrops fall when the water droplets in the clouds combine into bigger drops, large and heavy to remain suspended in the air.
- The smaller drops of rain are known as ______.
- The frozen drops of rain are known as ______.
- Name two regions of high rainfall.
The transformation of water vapours into water is called condensation. The condensation is caused by the loss of heat when the moist air is cooled. The cool air may reach a level when its capacity to hold water vapours ceases.
- What do you call the air which has seized its capacity to hold water vapours?
- List the different forms of condensation.
- Which is the most common form of condensation?
- Identify the type of cloud shown in the picture.
- At what altitude are these clouds present?
Answer the following questions.
What do you understand by the process of condensation?
Name four chief forms of condensation.
Which is the most common form of condensation?
Name the three types of rainfall. Which one is most common in the equatorial region?
Why is frontal rainfall common in mid-latitudes?
Define Humidity.
Distinguish between Absolute Humidity and Relative Humidity.
How is Absolute Humidity measured and expressed?
How is Relative Humidity measured and expressed?
Explain the process of cloud formation.
Name the different types of clouds.
Why do polar regions receive less rainfall?
What happens when a cold air mass meets a warm air mass?
Explain the geographical conditions for the formation of dew.
Explain the geographical conditions for the formation of fog.
Explain the geographical conditions for the formation of frost.
What is meant by a ‘Rain Shadow’ area?
Give one example of ‘Rain Shadow’ areas in India.
Name an area where cyclonic rainfall occurs.
What are the different forms of precipitation?
Why hills get snowfall while plains do not get it?
Which type of rainfall is received by the western coast of India?
The amount of water vapour in the air decreases with altitude. Give a reason.
Why is the convectional rainfall in the Amazon basin also known as 4 o’clock rainfall?
Why does dew occur commonly in winter?
Differentiate between dew and frost.
What is evaporation?
Name the factors that affect the rate of evaporation.
What are the chief requirements for Orographic rainfall to be experienced?
Draw a neat, well labelled diagram of Orographic rainfall.
State the major facts about the distribution of rainfall in the world.
Name the wettest regions of the world.
Give geographical reasons for the formation of deserts in different latitudes.
Give a reason why cyclonic rainfall is common in the belt of the Westerlies.
Define the term Dew Point.
How is saturated air different from unsaturated air?
Solutions for 14: Humidity
Rachna Sapra solutions for जॉग्रफी [इंग्रजी] इयत्ता ९ आईसीएसई chapter 14 - Humidity
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